<template>
    <div class="List" ref="wrapper">
      <div>
        <div class="area">
          <div class="title border-topbottom">当前城市</div>
          <div class="button-list">
            <div class="button-wrapper">
              <div class="button">{{city}}</div>
            </div>
          </div>
        </div>
        <div class="area">
          <div class="title border-topbottom">热门城市</div>
          <div class="button-list">
            <div
             class="button-wrapper"
             v-for="item in hotCities"
             :key="item.id"
             @click="handleCityClick(item.name)"
             >
              <div class="button">{{item.name}}</div>
            </div>
          </div>
        </div>
        <div class="area" v-for="(item,key) in cities" :key="key" :ref="key">
          <div class="title">{{key}}</div>
          <div class="item-list">
            <div class="item border-bottom"
            v-for="innerItem in item"
            :key="innerItem.id"
            @click="handleCityClick(innerItem.name)"
            >{{innerItem.name}}</div>
          </div>
        </div>
      </div>
    </div>
</template>

<script>
import {mapState, mapMutations} from 'vuex'
import Bscroll from 'better-scroll'
export default {
  name: 'List',
  props: {
    hotCities: Array,
    cities: Object,
    letter: String
  },
  data () {
    return {}
  },
  computed: {
    ...mapState(['city'])
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  },
  methods: {
    ...mapMutations(['changeCity']),
    handleCityClick (city) {
      // this.$store.commit('changeCity', city)
      this.changeCity(city)
      this.$router.push({'name': 'Home'})
    }
  },
  watch: {
    letter () {
      if (this.letter) {
        let element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  }
}
</script>

<style scoped lang="stylus">
.border-topbottom
  &:before
    border-color: #ccc
  &:after
    border-color: #ccc
.List
  position: absolute
  top: 1.58rem
  left: 0
  right: 0
  bottom: 0
  overflow: hidden
  .title
    height: .54rem
    line-height: .54rem
    background: #eee
    padding-left: .2rem
    font-size: .26rem
  .button-list
    padding: .1rem .6rem .1rem .1rem
    overflow: hidden
    .button-wrapper
      width: 33.3%
      float: left
      .button
        margin: .1rem
        padding: .1rem 0
        text-align: center
        border: .02rem solid #ccc
        border-radius: .06rem
  .item-list
    .item
      height: .76rem
      line-height: .76rem
      padding-left: .2rem
      .border-bottom
        &:before
          border-color: #ccc

</style>
